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Commit 71290b36 authored by Theodore Ts'o's avatar Theodore Ts'o
Browse files

ext4: Don't update superblock write time when filesystem is read-only 



This avoids updating the superblock write time when we are mounting
the root file system read/only but we need to replay the journal; at
that point, for people who are east of GMT and who make their clock
tick in localtime for Windows bug-for-bug compatibility, and this will
cause e2fsck to complain and force a full file system check.

Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent 08c3a813

fs/ext4/super.c

+12 −1
Original line number Diff line number Diff line
@@ -3222,6 +3222,17 @@ static int ext4_commit_super(struct super_block *sb, int sync) 
		clear_buffer_write_io_error(sbh);

		set_buffer_uptodate(sbh);

	}

	/*

	 * If the file system is mounted read-only, don't update the

	 * superblock write time.  This avoids updating the superblock

	 * write time when we are mounting the root file system

	 * read/only but we need to replay the journal; at that point,

	 * for people who are east of GMT and who make their clock

	 * tick in localtime for Windows bug-for-bug compatibility,

	 * the clock is set in the future, and this will cause e2fsck

	 * to complain and force a full file system check.

	 */

	if (!(sb->s_flags & MS_RDONLY))

		es->s_wtime = cpu_to_le32(get_seconds());

	es->s_kbytes_written =

		cpu_to_le64(EXT4_SB(sb)->s_kbytes_written +